Auxiliary-air device



I/v. c. DILLoN.

AUXILIARY AIR DEVICE.

APPLICATION FILI-:D SEPT. I4, 1920.

1,392,922. A Patented 001. 11,1921.

WILLIAM C. DILLON, F` FORT DODGELIOWA.

PATENT.

f AUxILIARY-AIR DEvIcE.

To all whom t may concern Beit known that I, WILLIAM C. DILLoN, a citizen of the United States, and a resident of Fort Dod e, in the county vofVVebster `and State of owa, have invented a certain new and useful Auxiliary-Air Device, of which the following is a specification.

The purpose of my invention is to provide an auxiliary air device, of very simple, durablefand inexpensive construction, which can be easily adapted to an internal combustion engine, between the carbureter and the intake manifold for supplying auxiliary air to the fuel mixture. A further object is to provide such a device, which is automatic in its ordinary operation and which may be controlled-from the dash or other point at a distance from the device.

A further object is to provide such a device, having air screeningmeans and novel means for supporting. the vair screening.

- .Still a further object is to provide such a device, which can be assembled as a unitI fofr Vpacking or transportation, andalso Vfor 'installation on the engine.

' Vl/Vith these and other objects in view, myinvention consists in the construction, arrangement and combination of the various parts of my device, whereby the objects contemplated are attained, 'as hereinafter moreV fully set forth, Vpointed out in my claims and illustrated in the accompanying drawings, in which: Y

Figure 1 shows a sideV elevation of an intake manifold and carbureter and connecting pipe equipped Vwith an auxiliaryV air device, embodying my invention.

Fig. 2 shows a detail, sectional view taken onthe line 2 2 of Fig. 1; and

Fig. 3. showsV a vdetailsectional view'taken on the line 3-3 of Fig. 2. 'i In'the accompanying drawings, I have used the'refer'ence numeral` 10 to indicate generally a carbureter, which communicates with the `pipe '11, leadingto an intake manifold 12.

.InV the form of the'device shown herein, :the carbureteris provided with a flange 13, which is arranged where my'device is not usedto-abut againstf a flange 14 on the .pipe 11, theseflanges being secured together by bolts or the like. f

.Y My device is designed to be placed between-the flanges 13 and 14 andicomprises Specification of Letters Patent..l

"Patented oet. 11,1921.

Application led September 14, 1920. Serial No. 410,261.

al casting or other piece preferably of metal,

having substantially the shape ofl aY thin plate 15, provided with al central Aopening '16 arranged to register with the openings in the carbureter and the pipe 11.V

The plate 15, has holes 17 toreceive the bolts 18, whereby the plate is fastened to the flanges 13 and 14. Gaskets 19 are preferably placed on eachside of the plate.Y

Extending downwardly from theplate near 'the ends thereof are vertically arranged vposts 20, the lower ends of which are screw-threaded, as at 22 to receive nuts 23.

Extending downwardly. from the central portion of the plate 15 is -an extension24, which has at its lowerV end a laterally.v extending lug 25.k Onvthe opposite sides of vthe'extension 24 are downwardly extending members 26, which are externally screwthreaded. Holes 27 extend vertically throughA the extensions 26 andthe body of the plate15 from. the 'outer' ends 0f the vex- -tensions 26 to the opening 16, as illustrated for instance in Fig.` 2`.

- "Mountedon the'lower ends 4oftheextensions 26 are ycylindrical'caps 28, each having at its upper portion a screw-threaded bore 29 adapted to receive one of the extensions26yf` f At the bottom of the hole o'rbore 29' is A a shoulder 30, below which is a reduced bore 31. A small inlet hole-,32 extends from the lower end of the bore 31 to the exterior of the cap28. v

Mounted in the holes 27 and projecting -w'ell vinto the holes 16 are air screening -devices 33, preferably-made of' a roll of meshed wire.' The shoulder formed at the lower endofeach bore 31 forms a valve seat, which coacts with a'ball valve 34.

Slidably mounted..on the members. is across bar 35 y'on which is a felt or leather member' 36.v Extending through the cross '-bar 35 isa hole 37, through which extends the member 36 against the lower end of the caps 28 for closing the openings or passa es 32.

bprings 41 mounted' on the members 20 yieldingly hold the bar 36 at Vthe downwardly limit of its movement. Y'

In the practical use of my improved auxiliary air device, the driver of the car, when starting the car, pulls on the rope 40 for closing the passages 32 and preventing the ingress of any air to the pipe 11. s

After the .engine has been warmed up, the rope 40 is released, whereupon the springs 41 will force the bar'35A away from the caps 30, and the suction from the engine will draw air through the passages 32, 31 and 27 and through the screening or filtering members into the mixture in the pipe 11.

It will, of course,be obvious that when a vacuum is created in the pipe 1l, the outer Vair will force its way pastv the balls 34, and

the greaterv the vacuum, the greater will be the amount of auxiliary air supplied-to the engine. n

It will beseen that the'bar 35 may be adjusted close to or far from the caps 28, and that by holding the bar close to the caps 28, but not in tight engagement therewith,'the volume of auxiliary air'admitted to the intake manifold may be reduced and regulated.

The auxiliary air device-maybe made' inoperative for starting or in cldweather,

where it is desirable not to admit any auxiliary air to the fuel mixture.

It will be noted that my dfeviceisl of extremely simple and inexpensive construction. It occupies small space and can therefore be cheaply stored or transported.v

It may be mentioned that the lower ends of the members 33 are flared slightly, so as to be engaged between the lower ends of the members'26 andthe shoulders 30 for thereby locking thel screening orA Yfiltering members 33 against. movement. Iy have found this is desirable for otherwise, `these members 33 will sometimes be jerked' inwardly and will then drop back, thereby pounding their ends and compressing them, vso as to make almost a closed end, which reduces the air inflow.

Furthermore by fastening the ends ofthe members 33, there is no danger of their being drawn into. the intake manifold.

I find that the best results are obtained when the caps 28 yare vertically'arranged. The valves work more satisfactorily than is otherwise the case. `The members 2()v serve as guides as well as supports for the bar 35.

The holes 32 are of different sizes so that at the lower speeds only one valve operates, while at higher speeds both valves operate.

Some changes may be -made in the construction and arrangement of'my improved auxiliary air device Withoutdepartingfrom the essential purpose and spirit of my invention, and it is my intention to cover by my claims, any modified forms of structure or combustion engine, said plate havingY anopening, an extension on said plate, an opening extended through said extension and the body of the `plate to' said first opening,a cap mounted on said extension, a Afiltering device mounted in said last opening, said cap having an opening V'extending through it and a portion forming a valve seat, a ball valve for coacting with said. seat, means for closing thepassage at the outer end of the cap, said means comprising a bar slidably mounted on said plate.

2. An auxiliary air device, Vcomprisinga plate designed to. be interposed inthe path of travel of the fuel Vmixture of'an internal combustion engine, said plate havingY an opening, an extension on said plate, an opening extended through said extension and the body of the plate to said first opening, a cap mounted on said extension, a filtering device mounted 'in saidlast opening', saidcap havingan opening extendingthrough it and a portion forming arvalve seat, a ball valve for coacting with said seat, means for :closing the passage at the outer end of the cap, said means comprising la' harslidably mounted on said plate, a flateral extension on said plate, having an inclined Yhole and a member connected'with said bar and extended through said hole for actuating said bar.

3. An auxiliary air device, comprising a plate designed to beA interposed in the path of travel of the fuel mixtureof an internal combustion engine, said plate lhaving an opening, 'an extension on said plate, 'on opening extended through said extension and the body of the plate tothe first'op'ening, a cap mounted on said extension, a filtering device .mounted 'in said last opening, said Icap having an opening extending through -it 'anda portion forming a valveseat, a ball valve for coacting with Ysaid seat, 'means for closing the passage at the outer end of the cap, Vsaid means comprising a' bar vsli'dably mounted 4on said plate," a lateral Yextension on said tending through said extensions and through the body of the plate to said first opening, caps mounted on said extensions, having passages through them, ball valves for controlling the passage of air through said last passages, and means for closing the outer ends of said last passages.

5. In a device of the class described, a plate adapted to be interposed in the path of travel of the fuel mixture of an internal combustion engine, having a hole, downward extensions on said plate, openings extending through said extensions and through the body of the plate to said first opening, caps mounted on said extensions, having passages through them, ball valves for controlling the passage of air through said last passages, and means for closing the outer ends of said last passages, and means for closing the outer ends of said last passages, said means comprising a plate, means for yieldingly holding said plate away from said caps, and means for moving said plate to position adjacent to said caps.

6. In a device of the elass described, a plate adapted to be interposed in the path of travel of the fuel mixture of an internal combustion engine, having a hole, downward extensions on said plate, openings extended through said extensions and through the body of the plate to said irst opening, caps mounted on said extensions having passages through them, ball valves for controlling the passage of air through said last passages, means for closing the outer ends of said last passages, said means comprising a bar, members on said plate Vfor slidably supporting saidV bar, yielding de-V vices for moving said bar away from said caps, and means for drawing said bar against said caps.

7. In a device of the class described, a plate adapted to be interposed in the path of travel of the fuel mixture of an internal combustion engine, having an opening therethrough, an extension on said plate, the body of said plate having an opening extending from the outer end of the extension to said hole, a filtering 'device mounted in said last opening, a cap mounted on said extension having a shoulder on its interior and provided with a passage extending through it, one end of said filtering device being engaged by the said shoulder and said extension, a valve for controlling the passage through said cap, and a member for closing said passage.

Des Moines, Iowa, August 28, 1920.

WILLIAM C. DILLON. 

